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Positive Displacement Pumps

These pumps are often thought of as high-pressure pumps. Their positive displacement of fluid and fixed volume are the result of the fluid being mechanically moved through their pump passage on a regular cycle. This means that regardless of the system they discharge into, the pressure and volume will remain constant. The power of the driving device and its speed, limit the volume and pressure.Positive Displacement pumps:Flow rates of GPD, CC/min to 100 GPM typically.Discharge pressures of a 1 to 1000 PSI.Low speed and fixed volume per cycle, they handle very viscid fluids well.Smaller than centrifugal pumps.Quiet, do not ad much heat to the fluid, suitable for shear sensitive fluids.Diaphragm pumps can easily pass solids, stringy and fibrous foreign matter. Are made in materials from CI to Titanium and PP, PVDF and PPS engineering resins.
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  1. Tsurumi

    Diaphragm Trash pump

    TD4-200

    $2,275.00
    Diaphragm mud trash pumps. Honda powered diaphragm trash pumps are designed to be reliable, easy to start, easy to prime, easy to maintain and are built to last. QUALITY 4-STROKE Honda GX ENGINES with OHV, and a transistorized pointless ignition ...
    Honda 4HP GX120 Learn More
  2. General Pump

    EZ 44 3plex 6.2hp Solid Shaft

    EZ2536S

    $1,045.45
    EZ 44 S Triplex Plunger Pump with Solid Shaft - Forged brass manifold with an exclusive lifetime warranty.
    • Solid ceramic plunger design
    • Flex coupling and bell housing available for direct drive
    • Die-cast, anodized aluminum, oil-bath crankcase
    • Pre...
  3. Aquatec Pumps

    5 chamber diaphragm pump

    5503-1FE1-J526

    $289.08
    550 Series Super Flow Pump: Reverse Osmosis System Pump, High Powered RO/DI Reverse Osmosis Pump

    OPERATION: The 550 pumps can draw water from a holding tank and pressurize it, or boost the pressure from a low pressure source. It is designed to...

    5GPM 70PSI 115v Learn More
  4. Hypro Pumps

    Bronze Gear Pump W/Relief

    BBV3

    $824.00

    Bronze Pedestal Gear Pump, light duty with relief valve. Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and commercial applications, providing a nearly pul...

  5. Oberdorfer Pumps

    1.25" Bronze gear pump

    N1100W-T98

    $2,806.70
    1 1/4" Bronze rotary gear pump with relief valve and close coupled to a 1 1/2 HP TEFC motor.

    Use to pump oil and other viscous thick liquids, De-icing fluids.

    1.5HP 230/460v Learn More
  6. General Pump

    EZ 44 3plex 6.3hp Hollow Shaft

    EZ2536EUI

    $1,245.55
    EZ 44 E Triplex Plunger Pump with Hollow Shaft, Flanged for Direct Couple to Electric Motors (NEMA-184TC) - Forged brass manifold with an exclusive lifetime warranty. This pump includes Unloader and Downstream Injector.
    • Ideal for all pressure cl...
  7. Aquatec Pumps

    24v Elect. diaphragm pump

    5852-1F12-B423

    $281.78
    580 Series Super Flow Pump: These pumps are specifically designed for mobile low flow or low voltage applications such as RO water systems, pesticides and fertilizers. 24 VAC. Pressure switch set at 70 PSI. Connections are 3/8 " John Guest fittin...
  8. Hypro Pumps

    Bronze Gear Pump W/Relief

    BBV4

    $866.00
    Bronze Pedestal Gear Pump, light duty with relief valve. Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and commercial applications, providing a nearly ...
    Bronze 1/2" Learn More
  9. General Pump

    EZ 44 3plex 7.2hp Hollow Shaft

    EZ2542E

    $1,094.75
    EZ 44 E Triplex Plunger Pump with Hollow Shaft, Flanged for Direct Couple to Electric Motors (NEMA-184TC) - Forged brass manifold with an exclusive lifetime warranty.
    • Ideal for all pressure cleaning and washing applications
    • Solid ceramic plu...
  10. Oberdorfer Pumps

    N994 Gear Pump Only

    N994R-S15

    $1,069.90
    Gear Pump Only. No motor. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Gear Pump KIT. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long servi...
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